Jeff Thanks! What you saying is very true of stack-overflow and although I visit occasionally their whole karma formula does not appeal for the reason you menti

Jeff Thanks! What you saying is very true of stack-overflow and although I visit occasionally their whole karma formula does not appeal for the reason you mentioned. I was thinking in similar lines and have introduced the groups concept for example when you belong to the 'lisp circle' you will be able to earn additional points when you answer or solve lisp problems. My concern is not to let the users focus too narrowly, I was thinking that joining groups should be limited i.e, when you accumulate 100 points you can join a group and as you earn open up more groups... To link the whole thing in a sort of 'PageRank' algorithm to stop people from gaming the system is what is puzzling me.